import axios from 'axios'
import { ElNotification, ElMessageBox, ElMessage, ElLoading } from 'element-plus'
import { getToken, removeToken, removeUserId } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import { tansParams, blobValidate } from '@/utils/ruoyi'
import cache from '@/plugins/cache'
import { saveAs } from 'file-saver'

let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = { show: false };

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
axios.defaults.headers['X-Requested-With'] = 'XMLHttpRequest'
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: import.meta.env.VITE_APP_BASE_API,
  // 超时
  timeout: 86400000
})

// request拦截器
service.interceptors.request.use(config => {
  // 是否需要设置 token
  const isToken = (config.headers || {}).isToken === false
  // 是否需要防止数据重复提交
  const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
  if (getToken() && !isToken) {
    config.headers['token'] = 'token ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
  }
  // get请求映射params参数
  if (config.method === 'get' && config.params) {
    let url = config.url + '?' + tansParams(config.params);
    url = url.slice(0, -1);
    config.params = {};
    config.url = url;
  }

  if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
    const requestObj = {
      url: config.url,
      data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
      time: new Date().getTime()
    }
    const sessionObj = cache.session.getJSON('sessionObj')
    if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
      cache.session.setJSON('sessionObj', requestObj)
    } else {
      const s_url = sessionObj.url;                // 请求地址
      const s_data = sessionObj.data;              // 请求数据
      const s_time = sessionObj.time;              // 请求时间
      const interval = 1000;                       // 间隔时间(ms)，小于此时间视为重复提交
      if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
        const message = '数据正在处理，请勿重复提交';
        console.warn(`[${s_url}]: ` + message)
        return Promise.reject(new Error(message))
      } else {
        cache.session.setJSON('sessionObj', requestObj)
      }
    }
  }
  return config
}, error => {
  console.log(error)
  Promise.reject(error)
})

// 响应拦截器
service.interceptors.response.use(res => {
  // 未设置状态码则默认成功状态
  const code = res.data.code || 200;
  // 获取错误信息
  const msg = errorCode[code] || res.data.message || errorCode['default']
  // 二进制数据则直接返回
  if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
    return res.data
  }
  if (code === 401) {
    if (!isRelogin.show) {
      isRelogin.show = true;
      ElMessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
        confirmButtonText: '重新登录',
        cancelButtonText: '取消',
        cancelButtonClass: 'is-plain',
        type: 'warning'
      }
      ).then(() => {
        isRelogin.show = false;
        userStore.logOut().then(res => {
          console.log(res)
          location.href = res.retUrl
        })
      }).catch(() => {
        isRelogin.show = false;
      });
    }
    return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
  } else if (code === 500) {
    ElMessage({
      message: msg,
      type: 'error',
      dangerouslyUseHTMLString: true,
    })
    return Promise.reject(new Error(msg))
  } 
  // else if (code !== 200) {
  //   ElNotification.error({
  //     title: msg
  //   })
  //   return Promise.reject('error')
  // }
   else {
    return Promise.resolve(res.data)
  }
},
  error => {
    console.log('err' + error)
    let { message } = error;
    if (message == "Network Error") {
      message = "后端接口连接异常";
      removeToken()
      removeUserId()
      location.href = import.meta.env.VITE_APP_URL + import.meta.env.VITE_APP_BASE_API
    }
    else if (message.includes("timeout")) {
      message = "系统接口请求超时";
    }
    else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    }
    ElMessage({
      message: message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

// 通用下载方法
export function download(url, params, filename, isDefault) {
  downloadLoadingInstance = ElLoading.service({ text: "正在下载数据，请稍候", background: "rgba(0, 0, 0, 0.7)", })
  let config = !isDefault ? {
    transformRequest: [(params) => { return tansParams(params) }],
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
  } : {}
  return service.post(url, params, {
    // transformRequest: [(params) => { return tansParams(params) }],
    // headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    ...config,
    responseType: 'blob',
    onDownloadProgress: (ProgressEvent) => {
      const { loaded, total } = ProgressEvent
      let totalNum = total / 1024 > 1014 ? (total / 1024 / 1024).toFixed(2) + 'MB' : (total / 1024).toFixed(2) + 'KB'
      let loadedNum = total / 1024 > 1014 ? (loaded / 1024 / 1024).toFixed(2) + 'MB' : (loaded / 1024).toFixed(2) + 'KB'

      downloadLoadingInstance.setText(`正在下载...${loadedNum}/${totalNum}(${(loaded / total * 100).toFixed(2)}%)`)
      console.log(loaded, total)
      if (loaded >= total) {
        downloadLoadingInstance.close();
      }
    }
  }).then(async (data) => {
    const isLogin = await blobValidate(data);
    if(data.size == 0){
      downloadLoadingInstance.close();
    }
    if (isLogin) {
      const blob = new Blob([data])
      saveAs(blob, filename)
    } else {
      const resText = await data.text();
      const rspObj = JSON.parse(resText);
      const errMsg = errorCode[rspObj.code] || rspObj.message || errorCode['default']
      ElMessage.error(errMsg);
      downloadLoadingInstance.close();
    }
  }).catch((r) => {
    // ElMessage.error('下载文件出现错误，请联系管理员！')
    downloadLoadingInstance.close();
  })
}

export function hrefDownload(config) {
  let { url, params, text } = config
  text = text || "正在下载数据..."
  let downloadLoadingInstance = ElLoading.service({ text, background: "rgba(0, 0, 0, 0.7)" })
  service({
    url: `${url}`,
    method: 'get',
    params,
    onDownloadProgress(ProgressEvent) {
      const { loaded, total } = ProgressEvent
      let totalNum = total / 1024 > 1014 ? (total / 1024 / 1024).toFixed(2) + 'MB' : (total / 1024).toFixed(2) + 'KB'
      let loadedNum = total / 1024 > 1014 ? (loaded / 1024 / 1024).toFixed(2) + 'MB' : (loaded / 1024).toFixed(2) + 'KB'
      downloadLoadingInstance.setText(`${text}${loadedNum}/${totalNum}(${(loaded / total * 100).toFixed(2)}%)`)

      if (loaded >= total) {
        downloadLoadingInstance.close();
      }
    }
  }).then(res => {
    location.href = `${import.meta.env.VITE_APP_BASE_API}${url}?${tansParams(params)}`
  })
}

export default service
